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authorAlan Cox <alan@redhat.com>2008-10-14 11:29:06 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-14 10:03:33 -0700
commit4aba41ea8bdc1b475861f5e5c1649ab20251090c (patch)
tree3a39612ac27c742d4999f1c411ee23a9eedde71f
parent7591103c08abade60aeddb432ed0686ddd0de1c6 (diff)
8250: Fix lock warning (and possible crash)
Splitting the 8250 code back up to avoid a clash with the NR_IRQS removal patch introduced a last minute bug. Put back the additional needed lines for the old lock init Signed-off-by: Alan Cox <alan@redhat.com> [ Ingo also reports that this can cause a spontaneous reboot crash with certain configs, and sends in an identical patch ] Tested-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/serial/8250.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index d4104a3bbe8..d3ca7d32abe 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2969,6 +2969,9 @@ static int __init serial8250_init(void)
"%d ports, IRQ sharing %sabled\n", nr_uarts,
share_irqs ? "en" : "dis");
+ for (i = 0; i < NR_IRQS; i++)
+ spin_lock_init(&irq_lists[i].lock);
+
#ifdef CONFIG_SPARC
ret = sunserial_register_minors(&serial8250_reg, UART_NR);
#else